I've been in the KA50 for a while now and am proficient in it. Its much easier flying choppers in VR than on a flat screen - I got VR and never missed the middle of the landing pad at the FARP after that. Thing with the KA 50 and VR, you need a mod to be able to spot targets at a realistic distance in VR. I bought the huey and gazelle as much as I love the KA50, i wanted to test the survivabilty of the gazelle - it has RWR and Infra Red so i can finally do night missions they way the should be done. Even during the day - you can spot a target using white hot with no mods in the Gazelle. Much more realistic. While people say the huey is harder, i think its just different - if you can fly a chopper in DCS it will take you much less time to become proficient. I think the Gazelle offers the most entertainment at the moment chopper wise as its nimble, lightly armed and can operate fully at night.
My 0.02